• Designed not to cut a new thread but to chase out mushroomed, corroded, rusted threads.
• Creates a fit just like new with no undercut.
• Five Metric dies: 20 x 1.5, 22 x 1, 22 x 1.5, 24 x 1.5 and 24 x 2.
• Two Fractional dies: 3/4"-20 and 13/16"-20.
• All dies use same wrench for 1-1/2" hex.
• Comes in plastic pouch.